Wire Gauge Conversion Chart

Published: May 21, 2008

Wire Gauge Conversion Chart

Wire Gauges Arranged In Columns As Follows:

AWG= American Wire Gauge
B&S= Brown & Sharpe
SWG= Imperial Standard Wire Gauge-(British legal standard)

S.W.G.	Wire Number	A.W.G. or B&S	A.W.G. Metric
(Inches)	(Gauge)	(Inches)	(MM)
0.0200	25	0.0179	0,4547
0.0180	26	0.0159	0,4038
0.0164	27	0.0142	0,3606
0.0148	28	0.0126	0,3200
0.0136	29	0.0113	0,2870
0.0124	30	0.0100	0,2540
0.0116	31	0.0089	0,2261
0.0108	32	0.0080	0,2032
0.0100	33	0.0071	0,1803
0.0092	34	0.0063	0,1601
0.0084	35	0.0056	0,1422
0.0076	36	0.0050	0,1270
0.0068	37	0.0045	0,1143
0.0060	38	0.0040	0,1016
0.0052	39	0.0035	0,0889
0.0048	40	0.0031	0,0787
0.0044	41	0.0028	0,0711
0.0040	42	0.0025	0,0635
0.0036	43	0.0022	0,0559
0.0032	44	0.0020	0,0508
0.0028	45	0.0018	0,0457
0.0024	46	0.0016	0,0406
0.0020	47	0.0014	0,0350
0.0016	48	0.0012	0.0305
0.0012	49	0.0011	0,0279
0.0010	50	0.0010	0,0254

Comment:
Values are stated in approximate decimals of an inch excluding the metric numbers. As a number of gauges are in use for various shapes and metals, it is advisable to state the thickness in thousands when specifying in gauge number. Metric wire gauge is 10 times the diameter in millimeters.